Portable memory device



FIG. 1 is a perspective view of a portable memory device showing my new design;

FIG. 2 is a front elevationat view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is another perspective view thereof.

The broken lines in the drawings illustrate portions of the portable memory device which form no part of the claimed design. shading is used to illustrate the curvature of the part and not color. 

CLAIM The ornamental design for a portable memory device, as shown and described. 